William F. Fox, Lt. Col. U. S. V., Regimental Losses in the American Civil War, 1861-1865: A Treatise on the extent and nature of the mortuary losses in the Union regiments, with full and exhaustive statistics compiled from the official records on file in the state military bureaus and at Washington

Connecticut.--The 1st Heavy Artillery is noteworthy as having served in the field through the war, and in the arm of service to which it belonged. Very few of the other heavy artillery regiments in the army saw any service aside from garrison-duty, except while acting as infantry. The 1st Connecticut Heavy Artillery was organized as the 4th Infantry, but was changed in January, 1862, to heavy artillery. It served as heavy artillery at the Siege of Yorktown, in 1862, and was prominently engaged during the Siege of Petersburg, the most of its losses in action occurring at the latter place. The 1st, 2d, and 3d Infantry were three-months' regiments which went out in April, 1861, in response to the first call for troops, and were in action at First Bull Run. The 4th and 9th Infantry became, respectively, the 1st and 2d Heavy Artillery, thereby leaving those regimental numbers vacant. In the 8th Infantry, five men were executed for desertion, an unusually large number for one regiment. The deaths in the 16th Regiment include 154 deaths in Confederate prisons, over 400 of this regiment having been captured at Plymouth, N. C. The great mortality in the 9th was largely due to its service in the district of the Lower Mississippi, 153 of the deaths — or half of the number present for duty — occurring in the summer and fall of 1862 while stationed in the vicinity of Baton Rouge, Vicksburg, and New Orleans.